Valve-seater



(No Model.)

- J CAREY VALVE SEATER.

,95'7. Patented Apr; 8, 1890.

/ ATTORN WITNESSES Mm i1? ,trated in Fig. 0.

UNITED STATES.

PATENT FFICE.

JOHNCAREY, OF SYRACUSE, NElV YORK.

VALVE-SEATER.

SPECIFICATION forming part of Letters Patent No. 424,957, dated April 8, 1890.

' Application filed July 12,1889. SerialNo. 317,322. (No model.)

To all whom it may concern:

Be it known that 1, JOHN CAREY, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Valve-Seaters, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to an improved valveseater, and has for its obj ect the production of a simple and effective device which is readily and quickly applied to the frame formed with the valve, and is then operated to seat or faceoff the valve; and to this end it consists, essentially, in a guide piece'or plug detachably connected to said valve-inclosing frame, a stem or spindle guided through said guide-piece, a cutter secured at the inner extremity of said spindle and operated by a suitable crank or other mechanism secured to the outer extremity of the spindle, and afinishing collar or shoulder above the guidepiece and preferably adjustably secured to the outer extremity of the operating-spindle.

It also consists in the detail construction and arrangement of the parts, all as hereinafter more particularly described, and pointed out in the claims.

In describing myinvention eference is had to the accompanying drawings, forming a part of this specification, in which like letters indicate corresponding parts in all the views.

Figure 1 represents an elevation of an ordinary globe-valve having my improved valveseater mounted in operative position therewith. Fig. 2 represents a longitudinal vertical section of the parts as illustrated in Fig. 1. Fig. 3 represents a face view of the cutter shown in Fig. 2. Fig. 4: represents a face view of a modified form of cutter to that illus- Fig. 5 represents an ordinary faucet having my valve-seater operatively engaged therewith, and Fig. 6 is a lon gitudinal vertical section of the parts as illustrated in Fig. 5.

A represents Qthe valve inclosing frame, which may be of any well-known or special construction and form. Above the valve-seat B of the valve is the opening 0, with which the ordinary plug or bonnet is engaged for guiding the ordinary valve-stem. Secured to this opening and preferablyby screw-threads engaging screw-threads provided on the interior thereof is the guide piece or plug D of my improved tool. This plug D is preferably provided with a series of annular shoulders d of various diameters to suit different sizes of valves and render the same plug applicable for more than one size of valve. The upper extremity of said guide-piece is preferably provided with like annular shoulders (Z of different diameters from those provided at the lower extremity, and by reversing the guide-piece D the capacity of my tool is further increased.

Provided in the piece or plug D is the opening E, of suitable size. Guided through this opening is a spindle F, which is also of suitable size and is provided at its lower extremity with a cutter G, secured thereto by any well-known means. As illustrated, this cutter G is provided with a central opening having screw threads, which are engaged by screw-threads formed upon the lower extremity of the spindle F. In this case the top face of the cutter G contacts with a shoulder f, providedupon the spindle, and different-sized cutters may be used upon the same spindle. This cutter G is illustrated in Figs. 2 and 3 as formed with cutting-teeth g,which normally rest upon the valve-seat B, and when the spindle is rotated said teeth shave or cut off said seat until an even surface is produced. As preferably formed, these teeth 9 are formed or provided at their outside with the depending portion g, which shaves or cuts off the metal of the valve-seat at the point 0, forming an annular depression and preventing the decrease of the height of the annular shoulder a, with which the ordinary soft packing of a valve-stem is contacted. This becomes necessary, since around the soft pack ing of the valve-stem there is a metal edge the diameter of which is greater than the annular shoulder o, in order that the soft packing may make a tight connection with said seat. The annular cut-out or depression cin the Valve-seat allows this metal ring to be registered therewith, in order that the soft packing may abut against said valveseat.

The desired form of facing-teeth is procured by forming the cutter with ratchetshaped teeth and then turning off or removing the lower inner portion of said teeth,

2 enter)? causing the in nercutting-edge to be depressedv below the outer cutting-edge.

At Fig. 4 I have illustrated the teeth g with their cutting-surfaces in the same plane. This construction of cutter is only applicable where it is not desired to form the annular cut-out or depression 0, as previously described.

Above the guide piece or plug 1) is the collar H, which is secured to the spindle l! by a set-screw or other device 7!, allowiu said eollar to be placed upon said spindle with any desired distance between the lower face thereof and the top face of the guide-piece 1). Connected to the outer extremity of the spindle F is a suitable crank, brace, or other desirable means of rotating the same.

\\'hen the spindle F is rotated, the cutter will be also rotated, and its teeth 9 and y will respectively face off the projection c and increase the depth of the depression 0, thus producing a smooth valve-seat, with which the valve may be contacted to produce a tight joint. This operation of reseating the valve may be performed as many times as desired or until the stock is entirely worn away, and by this means a great saving isbrought about, since the same valve maybe used for a greater length of time than has heretofore been possible. Another feature of advantage "s the fact that this seating may be perforu'led while the valve is in its operative position in the piping of which it forms a part, thus further producing a saving which would otherwise be entailed by taking apart the old valve from the pipe and connecting a new one. Moreover, it will be understood that when the stock of the valve-seat has been entirely used up the old one may be replaced by shrinking or sweating a new one in operative position in the valve-inelosing frame, whereupon the valve-seater may be again used to face this seat as the wear of the parts shall render such operation necessary.

By means of the collar H, I am able to produce a very smooth bearing-surface upon the valve-seat, since the said collar can be set to a finishing-point, and as its underneath face is contacted with the top face of the guidepiece a very smooth surface is insured upon the valve-seat, since the downward movement of the cutter is prevented and the last cuts thereof produce a smooth finish.

At Figs. 5 and ti I have shown my valveseater as operatively connected to an ordinaryfaucet. In this case, owing to the small size of the opening for the ordinary plug of the faucet, I prefer to make my guide-piece D in the form of a cap, and provide the same with a series of interior annular shoulders (I of various diameters. In this modification the operation of the valve-seater is precisely the same as previously described.

The operation of my invention will be read ily perceived from the foregoing, and it will be understood that a great saving is produced by my invention both in lengthening the life of the valve and also in obviating the replacing of the valve with a worn valve-scat with a new valve.

The parts of my invention are very simple in construction and can be readily formed with desirablemachinery, thus producing the tool at a slight cost of expense.

Having thus fully (Ilescribed my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a valve-seater, the combination of the guide-piece adapted to be supported by the valve, a spindle revoluble within said guidepiecc, a cutter secured to said spindle, and a collar removably secured to said spindle above the top face of said guide-piece, with a slight space between said collar and top face of the guide, whereby the chattering of the cutter is prevented, substantially as and for the purpose set forth.

2. The combination of aguide-piece, a spindle guided through said guide-piece, and a cutter at the extremity of said spindle, having a series of cutting-teeth,and a second series of cutting-teeth having their operatingedge in a different plane from that; of the first series, substantially as and for the purpose specified.

3. The combination of aguide-piece having a series of shoulders of varying diameters, a spindle guided through said guide-piece, and a cutter at the extremity of said spindle, having teeth y, and having teeth g, formed with their cutting-edge in a different plane from that of the teeth g, substantially as and for the purpose specified.

l. The combination. of a guide-piece, a spindle guided through said guide-piece, a cuttcrhaving teeth g, and having teeth g, formed with their cutting-edge in a different plane from that of the teeth g, and a shoulder at the outward. extremity of said spindle and above the guide-piece, substantially as and for the purpose described.

5. The combination of a guide-piece having a series of shoulders of varying diameters, a spindle guided through said guide-piece, a cutter at the inner extremity of said spindle, and an adjustable collar at the outer extremety of said spindle and above the guide-piece, substantially as and for the purpose set forth.

Intestimon y whereof I have hereunto signed mynamc, in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 10th day of July, 1889.

.I O I IN (IA REY. \Vitncsses:

CLARK I l NoI-rroN, M. BAXTER.

IIO 

